2-Oxazoline-terminated polystyrene by atom-transfer radical polymerization

摘要

Macromonomers of polystyrene containing one functional 1,3-oxazoline end group were obtained by atom-transfer radical polymerization (ATRP) using oxazoline-containing initiators 2-(1-Bromoethyl)-1,3-oxazoline (2b) and 2-(4-(1-bromoethyl) phenyl)-1,3-oxazoline (6) were prepared for this purpose 2-(1-Bromethyl)-1, 3-oxazoline was prepared by the bromination of 2-ethyl-1, 3-oxazoline with N-bromosuccinimide. (NBS). 2-(4-(1-Bromoethyl)phenyl)-1,3-oxazoline was obtained by the treatment of 4-(1-bromoethyl)benzoic acid with ethanolamine and subsequent cyclization with SOCl2-. Both initiators proved to be suitable for the ATRP of styrene. Oxazoline Of sty mono-terminated polystyrenes with (M) over bar (n) between 2000 and 3500 g . mol(-1) were obtained. The groups were, observed in the NMR spectra. References: 19